| -- CXG2023.A |
| -- |
| -- Grant of Unlimited Rights |
| -- |
| -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, |
| -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained |
| -- unlimited rights in the software and documentation contained herein. |
| -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making |
| -- this public release, the Government intends to confer upon all |
| -- recipients unlimited rights equal to those held by the Government. |
| -- These rights include rights to use, duplicate, release or disclose the |
| -- released technical data and computer software in whole or in part, in |
| -- any manner and for any purpose whatsoever, and to have or permit others |
| -- to do so. |
| -- |
| -- DISCLAIMER |
| -- |
| -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR |
| -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED |
| -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE |
| -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE |
| -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A |
| -- PARTICULAR PURPOSE OF SAID MATERIAL. |
| --* |
| -- |
| -- OBJECTIVE: |
| -- Check that multiplication and division of decimal fixed point |
| -- numbers produce exact results. |
| -- |
| -- TEST DESCRIPTION: |
| -- Check that multiplication and division of decimal fixed point |
| -- numbers produce exact results. |
| -- |
| -- SPECIAL REQUIREMENTS |
| -- The Strict Mode for the numerical accuracy must be |
| -- selected. The method by which this mode is selected |
| -- is implementation dependent. |
| -- |
| -- APPLICABILITY CRITERIA: |
| -- This test applies only to implementations supporting the |
| -- Numerics Annex. |
| -- This test only applies to the Strict Mode for numerical |
| -- accuracy. |
| -- This test applies only to implementations supporting |
| -- decimal fixed point types of at least 9 digits. |
| -- |
| -- |
| -- CHANGE HISTORY: |
| -- 3 Apr 96 SAIC Initial release for 2.1 |
| -- |
| --! |
| |
| with System; |
| with Report; |
| procedure CXG2023 is |
| Verbose : constant Boolean := False; |
| |
| procedure Check_1 is |
| Num_Digits : constant := 6; |
| type Pennies is delta 0.01 digits Num_Digits; |
| type Franklins is delta 100.0 digits Num_Digits; |
| type Dollars is delta 1.0 digits Num_Digits; |
| |
| P1 : Pennies; |
| F1 : Franklins; |
| D1 : Dollars; |
| |
| -- optimization thwarting functions |
| |
| function P (X : Pennies) return Pennies is |
| begin |
| if Report.Ident_Bool (True) then |
| return X; |
| else |
| return 3.21; -- never executed |
| end if; |
| end P; |
| |
| |
| function F (X : Franklins) return Franklins is |
| begin |
| if Report.Ident_Bool (True) then |
| return X; |
| else |
| return 32100.0; -- never executed |
| end if; |
| end F; |
| |
| |
| function D (X : Dollars) return Dollars is |
| begin |
| if Report.Ident_Bool (True) then |
| return X; |
| else |
| return 321.0; -- never executed |
| end if; |
| end D; |
| |
| |
| begin |
| -- multiplication where one operand is universal real |
| |
| P1 := P(0.05) * 200.0; |
| if P1 /= 10.00 then |
| Report.Failed ("1 - expected 10.00 got " & Pennies'Image (P1)); |
| end if; |
| |
| D1 := P(0.05) * 100.0; |
| if D1 /= 5.00 then |
| Report.Failed ("2 - expected 5.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| F1 := P(0.05) * 50_000.0; |
| if F1 /= 2500.00 then |
| Report.Failed ("3 - expected 2500.0 got " & Franklins'Image (F1)); |
| end if; |
| |
| -- multiplication where both operands are decimal fixed |
| |
| P1 := P(0.05) * D(-200.0); |
| if P1 /= -10.00 then |
| Report.Failed ("4 - expected -10.00 got " & Pennies'Image (P1)); |
| end if; |
| |
| D1 := P(0.05) * P(-100.0); |
| if D1 /= -5.00 then |
| Report.Failed ("5 - expected -5.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| F1 := P(-0.05) * F(50_000.0); |
| if F1 /= -2500.00 then |
| Report.Failed ("6 - expected -2500.0 got " & Franklins'Image (F1)); |
| end if; |
| |
| -- division where one operand is universal real |
| |
| P1 := P(0.05) / 0.001; |
| if P1 /= 50.00 then |
| Report.Failed ("7 - expected 50.00 got " & Pennies'Image (P1)); |
| end if; |
| |
| D1 := D(1000.0) / 3.0; |
| if D1 /= 333.00 then |
| Report.Failed ("8 - expected 333.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| F1 := P(1234.56) / 0.0001; |
| if F1 /= 12345600.00 then |
| Report.Failed ("9 - expected 12345600.0 got " & Franklins'Image (F1)); |
| end if; |
| |
| |
| -- division where both operands are decimal fixed |
| |
| P1 := P(0.05) / D(1.0); |
| if P1 /= 0.05 then |
| Report.Failed ("10 - expected 0.05 got " & Pennies'Image (P1)); |
| end if; |
| |
| -- check for truncation toward 0 |
| D1 := P(-101.00) / P(2.0); |
| if D1 /= -50.00 then |
| Report.Failed ("11 - expected -50.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| P1 := P(-102.03) / P(-0.5); |
| if P1 /= 204.06 then |
| Report.Failed ("12 - expected 204.06 got " & Pennies'Image (P1)); |
| end if; |
| |
| F1 := P(876.54) / P(0.03); |
| if F1 /= 29200.00 then |
| Report.Failed ("13 - expected 29200.0 got " & Franklins'Image (F1)); |
| end if; |
| |
| exception |
| when others => |
| Report.Failed ("unexpected exception in Check_1"); |
| end Check_1; |
| |
| generic |
| type Pennies is delta<> digits<>; |
| type Dollars is delta<> digits<>; |
| type Franklins is delta<> digits<>; |
| procedure Generic_Check; |
| procedure Generic_Check is |
| |
| -- the following code is copied directly from the |
| -- above procedure Check_1 |
| |
| P1 : Pennies; |
| F1 : Franklins; |
| D1 : Dollars; |
| |
| -- optimization thwarting functions |
| |
| function P (X : Pennies) return Pennies is |
| begin |
| if Report.Ident_Bool (True) then |
| return X; |
| else |
| return 3.21; -- never executed |
| end if; |
| end P; |
| |
| |
| function F (X : Franklins) return Franklins is |
| begin |
| if Report.Ident_Bool (True) then |
| return X; |
| else |
| return 32100.0; -- never executed |
| end if; |
| end F; |
| |
| |
| function D (X : Dollars) return Dollars is |
| begin |
| if Report.Ident_Bool (True) then |
| return X; |
| else |
| return 321.0; -- never executed |
| end if; |
| end D; |
| |
| |
| begin |
| -- multiplication where one operand is universal real |
| |
| P1 := P(0.05) * 200.0; |
| if P1 /= 10.00 then |
| Report.Failed ("1 - expected 10.00 got " & Pennies'Image (P1)); |
| end if; |
| |
| D1 := P(0.05) * 100.0; |
| if D1 /= 5.00 then |
| Report.Failed ("2 - expected 5.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| F1 := P(0.05) * 50_000.0; |
| if F1 /= 2500.00 then |
| Report.Failed ("3 - expected 2500.0 got " & Franklins'Image (F1)); |
| end if; |
| |
| -- multiplication where both operands are decimal fixed |
| |
| P1 := P(0.05) * D(-200.0); |
| if P1 /= -10.00 then |
| Report.Failed ("4 - expected -10.00 got " & Pennies'Image (P1)); |
| end if; |
| |
| D1 := P(0.05) * P(-100.0); |
| if D1 /= -5.00 then |
| Report.Failed ("5 - expected -5.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| F1 := P(-0.05) * F(50_000.0); |
| if F1 /= -2500.00 then |
| Report.Failed ("6 - expected -2500.0 got " & Franklins'Image (F1)); |
| end if; |
| |
| -- division where one operand is universal real |
| |
| P1 := P(0.05) / 0.001; |
| if P1 /= 50.00 then |
| Report.Failed ("7 - expected 50.00 got " & Pennies'Image (P1)); |
| end if; |
| |
| D1 := D(1000.0) / 3.0; |
| if D1 /= 333.00 then |
| Report.Failed ("8 - expected 333.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| F1 := P(1234.56) / 0.0001; |
| if F1 /= 12345600.00 then |
| Report.Failed ("9 - expected 12345600.0 got " & Franklins'Image (F1)); |
| end if; |
| |
| |
| -- division where both operands are decimal fixed |
| |
| P1 := P(0.05) / D(1.0); |
| if P1 /= 0.05 then |
| Report.Failed ("10 - expected 0.05 got " & Pennies'Image (P1)); |
| end if; |
| |
| -- check for truncation toward 0 |
| D1 := P(-101.00) / P(2.0); |
| if D1 /= -50.00 then |
| Report.Failed ("11 - expected -50.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| P1 := P(-102.03) / P(-0.5); |
| if P1 /= 204.06 then |
| Report.Failed ("12 - expected 204.06 got " & Pennies'Image (P1)); |
| end if; |
| |
| F1 := P(876.54) / P(0.03); |
| if F1 /= 29200.00 then |
| Report.Failed ("13 - expected 29200.0 got " & Franklins'Image (F1)); |
| end if; |
| |
| end Generic_Check; |
| |
| |
| procedure Check_G6 is |
| Num_Digits : constant := 6; |
| type Pennies is delta 0.01 digits Num_Digits; |
| type Franklins is delta 100.0 digits Num_Digits; |
| type Dollars is delta 1.0 digits Num_Digits; |
| |
| procedure G is new Generic_Check (Pennies, Dollars, Franklins); |
| begin |
| G; |
| end Check_G6; |
| |
| |
| procedure Check_G9 is |
| Num_Digits : constant := 9; |
| type Pennies is delta 0.01 digits Num_Digits; |
| type Franklins is delta 100.0 digits Num_Digits; |
| type Dollars is delta 1.0 digits Num_Digits; |
| |
| procedure G is new Generic_Check (Pennies, Dollars, Franklins); |
| begin |
| G; |
| end Check_G9; |
| |
| |
| begin -- main |
| Report.Test ("CXG2023", |
| "Check the accuracy of multiplication and division" & |
| " of decimal fixed point numbers"); |
| |
| if Verbose then |
| Report.Comment ("starting Check_1"); |
| end if; |
| Check_1; |
| |
| if Verbose then |
| Report.Comment ("starting Check_G6"); |
| end if; |
| Check_G6; |
| |
| if Verbose then |
| Report.Comment ("starting Check_G9"); |
| end if; |
| Check_G9; |
| |
| Report.Result; |
| end CXG2023; |
